How much wastewater does Mendota Stp, City Of treat?

Mendota Stp, City Of treats an average of 0.67 MGD.

What is the NPDES permit for Mendota Stp, City Of?

The facility discharges under NPDES permit ILL023221, currently effective, expiring December 2030.

Is Mendota Stp, City Of in compliance?

Discharge monitoring reports show 29 violations at Mendota Stp, City Of in the last three years, 6 of them effluent limit exceedances. The full history is available in Klarifi.

Who operates Mendota Stp, City Of and how do I contact them?

Mendota Stp, City Of is a publicly owned treatment works in Mendota, Illinois. Klarifi lists decision-maker contacts for this facility, available with a free trial.

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Mendota Stp, City Of

Mendota, IL · La Salle County · Publicly Owned Treatment Works

Average flow: 0.67 MGD

Design flow: —

NPDES permit: ILL023221; Effective

Permit expires: December 2030

Population served: 6,994; CWNS 2022

Mendota Stp, City Of is a publicly owned wastewater treatment works in Mendota, La Salle County, Illinois treating an average of 0.67 million gallons per day, serving about 6,994 residents. It discharges under NPDES permit ILL023221 (effective), which expires in December 2030, with 29 recorded violations in the last three years.

Treatment technology

Treatment structures identified at this facility. Exact unit counts are available in Klarifi.

Treatment structure data not yet analyzed for this facility.

Compliance snapshot (last 3 years)

Total violations: 29

Effluent violations: 6

Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.

Key contacts

Decision-makers at Mendota Stp, City Of.

No verified contacts on file yet

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Mendota Stp, City Of: frequently asked questions

Sources and methodology

Flow, permit and violation figures come from the EPA's ICIS-NPDES discharge monitoring records. Population served comes from the Clean Watersheds Needs Survey 2022. Treatment structures are identified by Klarifi's review of aerial imagery, and capital improvement projects are extracted from published municipal budget documents. Violations are counted over the last three years of monitoring reports.

Data refreshed September 11, 2026; facility record last updated December 22, 2024.

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